Weather in Lech: September
| Average day temperature: | 53.4°F | |
| Average night temperature: | 42.9°F | |
| Sea water temperature: | 65.3°F | |
| Number of sunny days: | 11 days | |
| Day length: | 11.7 - 13.4 hours | |
| Number of rainy days: | 7 days | |
| Precipitation totals: | 4.0 in. | |
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| Lech |
Air temperature in September, °F
The highest day temperature during September of 2026 was 70°F. At the same time the lowest night temperature was 34°F. Daily and nightly averages during September were 58.3°F and 43.6°F.
Sea water temperature in Lech in September, °F
The average sea water temperature in September of 2026 was 69.6°F. The highest and lowest sea temperatures during the month were 75.0°F and 65.8°F.
Number of sunny, partly cloudy and cloudy days in September is almost equal.
Precipitation total in September, in.
Precipitation total value in Lech in September is 3.8 in. Other months of the year show relatively similar values.
The average wind speed value in September is 3.5 mph It makes September lest windy month of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 6.7.
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Lech on a weather map

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